Hi guys-
I am trying to derive and test offsets from all the d2eep ntuples
from runs 1348-1799 and am mainly using the PID cut idl/idr==14. What I
don't want to do is crunch all new ntuples to test offsets. So I am
trying to subtract them from the already crunched ntuples. Here's the
problem, say I want to plot ttl-ttr for a proton in a left paddle with
ttr coming from all the other right sector paddles. I read in the offsets
and then subtract them in a loop over the paddles for ttl but for ttr the
paddle varies. I wanted to use ntr as the array variable for ttr (and
ntl for the ttl array index in ttr-ttl. But I can't get this to work.
In the loop over left proton paddle have a string:
TString
L_drawstring(u+"ttl-("+offsetL0[paddle]+"+"+offsetL1[paddle]+")/2
-ttr+("+offsetR0[+"ntr"+]+"+"+offsetR1[+"ntr"+]+")/2>>
ttl_minus_ttr_["+paddle+"]");
but it won't take ntr as the index for the electron paddle side offsets...
it gives me:
Syntax Error: +"ntr"+ FILE:d2proton_idl2_avg.C LINE:119
Error: Illegal pointer operation (tovalue) FILE:d2proton_idl2_avg.C
LINE:119
any thoughts?
Thanks,
Pete
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Pete Karpius
Graduate Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)862-1220
FAX: (603)862-2998
email: karpiusp@einstein.unh.edu
http://pubpages.unh.edu/~pkarpius/homepage.htm
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